ADSL Misrepresentation

I am paying Telkom for a 10Mb ADSL line which i have had insta;lled lasy year. Since installation im complaining that i am only getting at best 2MB down loads and even worse uploads..My last fault logged in December 2017 with escalation reference 478CRK020118 is STILL outstanding. No one is getting back to me. all i keep getting is SMS's stating that my fault is still unresolved. I demand a refund on my subscription. I stated that in my numerous emails to an automated response email address. I do not think anyone at Telkom Customer service reads our emails. the only email address th CC would give me was ********** I am desparate